I think his gist is that, of course a developer should expect to be paid more than that because they're special. But photographers just click pictures so they should be grateful to make anything at all.

There's a little more to being a photographer than clicking a button, but it might not look like that from the outside. It's like calling basketball "just tossing a ball around".

Programming is just glorified copy and paste, so it has more in common with photography than you think.